It means, to discover where one is politically.
dictionary.com offers this definition:
8. to become aware of, or discover (oneself), as being in a condition or location: After a long illness, he found himself well again. She woke to find herself at home.
The American Heritage Dictionary of Idioms offers this one:
Discover where one is; also, how one is feeling. For example, He suddenly found himself on the right street, or To my surprise I find myself agreeing with you. [Mid-1400s]
Hope that helps.